<?php
/**
 * Created by PhpStorm.
 * User: yangfan
 * Date: 2020/1/15
 * Time: 2:01 PM
 */

namespace App\BO\PaymentState;

interface IPaymentFlow
{
    /**
     * 支付动作
     * @return mixed
     */
    public function pay();

    /**
     * 退款动作
     * @return mixed
     */
    public function refund();
}
